Window shade



FIG. 1 is a front elevation view of a window shade;

FIG. 2 is a side edge view thereof, it being understood that the opposite side is substantially the same;

FIG. 3 is an end edge view thereof, it being understood that the opposite end is substantially the same; and,

FIG. 4 is an enlarged fragmentary elevation view taken from the encircled area 4 in FIG. 3.

The rear surface of the window shade forms no part of the claimed design.

The pattern of lines fragmentarily shown in FIG. 1 is understood to extend across the entire surface of the window shade. 

The ornamental design for a window shade, as shown and described. 